Automatic nonset stop for talking machines



LE ROY COPLIN.

AUTOMATIC NONSET STOP FOR TALKING MACHINES APPL|CAT-ION FILED OCT. ll, 1920.

1,415,8O, Patented May 9, 1922.

2 SHEETS-SHEET l,

LE ROY COPLIN.

AuToMAnc NoNsE svoP Foa TALKING MAcHrNEs. APPLICATION FILED 061'. 1.1-, 1920.

Patented May 9,1922.

2 SHEETS-SHEET Z- PATENT '0.F`lilCE.

LE `ROY COPLIN, F 'l/VINDBER, PENNSYLVANIA.

AUTOMATIC NONSET STOP FOR TALKING MAHINES.

Specification of l et'ters Patent.

Patented May 9, 1922.

Application `filed October 1L 1920. Serial No. 416,22*?.

the machine when the record is iinished.

The object of theyinvention is to provide an automatic non-set stop vfor talking machines controlled exclusively ihy the motion ofthe tone arm and wh ich requiresI no set ting; o1' attention by the operator:

Another object is to so construct such `mechanism that the brake will be applied gently and smoothly to stop the turntable i avoiding abrupt stoppage oil the machine and the injurious effec s incident thereton Another object is to provide a stop oit this character which can be `used on any talking; machine not employing a gear driven tone arm such as the Edison, without in any way altering,r the machine; which is simple in i construction and cheaply manufactured and,

which operates simply and positively.

`Anotherobject is to provide a break applying device for talking machines `so con.- structed and connected with the tone arm that the break can only be applied when the tone arm ceases to move which occurs when the last thread of the record is reached.

i Another object is to so construct and connect such a stop that the tone arm may be `lifted and moved out beyond the turntable to provide for the change ot a record without releasingi the brake1 which release is effected by the moving' inward ot the tone arm into playing position on the record.

`With these and other objects in viewTthe invention consists in certain novel features of construction as hereinafter shown and described and specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the invention.

1n thel accompanying drawing:

Figure 1 represents a top plan View of a talking machineturntable with the tone arm shown in operative position relatively thereto, a part of said table being broken out to disclosethe attachment constituting this invention, the parts of the attachment being l and which meshes with a in the position a:-r;i|med when the record is playing.

Vip: l is a siniilar view with the parts in the po., on assumed at the completion of the record just prior to the application of the brake.

El is a central tran verse section taken on the line iii-Jl oil if?. 2 l

Fig. ei is a detail transverse section taken on the line l-w--l ot Fig. l,

'Fig'. 5 is a detail perspective View of the brake, and, i

Fig'. (S is a detail sectional view taken on the line ti--t ol hipo l. l in the embodiment illustrated a turntable i is shown mounted centrally on a post P and over wliich is mounted to operate'a tone arm :l '.airyingr the reproducer R. These pai-ts are et ordinary constructionisuch as are usually AFound in talking; machines einn ployin disc records an d Yform no part ol" the invention.

The attachment; constitutiinr the invention is mounted beneath Jdie tiu'ntable T preterably on a met-al pla te to be screwed `on the board underneath the turntable `and comprises a gear .l mounted on the center post P .large `-gear 2 carryino; on its upper tace a ifv e .on washer 3 which is here shown in the form oif' a three pointed star, one point oit which carries at its outer end an upstamline; pin or stud l l'or a purpose presently to be i'leseribed. i

A. plate i is mounted liiosely at one endon a screw l'iearinp; 6 which here shown in radial alinement with post P. This plate 5 has an upwardly oiifset intermediate portion 8 to permit the .large gear 2 to'operate thereunder as is shown clearly in Fig. 3. The iree end of this plate 5 projects beyond the perimeter oi? the turntable T and is equipped with an operating knob 7. which may be used to manually release the brakes when itis not desired to litt the tone arm but it is not neces sary to the operation oi the attachment. The plate 5 is also provided on its inner edge with a, laterally exten'clingarm 9 having at its terminal a downturned lip l0 ior a purpose presently to he described. i This plate 5 also has extending; vrom its opposed side edges in advance ot the odset portion 8 arms ll and l2 provided with longitudinally exendingarcuate. slots 13 through which pass headed studs 14, these studs and slots operating to limit the swinging movement of plate 5 in opposite directions, which movement is accomplished by means presently to be described.

A connecting bar or pitman is pivoted at one end to the inner end of the offset portion 8 of plate 5 and has a pin and slot connection at its other end with a link 16. This link 16 is pivoted to one arm 17 of an l..- shaped bracket, the arm 18'of which is secured by riveting or otherwise to the tone arm A as is shown clearly in Fig. 6. The pivot which connects link 16 with arm 17 has a coiled spring mounted thereon between said members and provides a friction joint, the objectl of which will be hereinafter set forth. The spin, and slot connection between bar 15 and4 link k16 provides for the unsteady motion of the tone arm while playing a record without affecting the stopping mechanism.

A brake 20 is carried by one end of an 1.-- shaped lever 21 fulerumed at its other end to the machine as shown at 22 and to the elbow of which is pivotally connected one end of a bar 23 as shown' at 24. The brake 20 is positioned adjacent the perimeter of the turn` j table T and is movable toward and away from the edge of said table on the application or release of the brake. The otherI end of the bar 23 carries a longitudinally slotted head 25 through the slot 26 of which passes a headed stud 27 carried by an arm 28 of plate 5. The terminal of head 25 has a de pending lug 29 extended over the edge of arm 28 at 'one side thereof and` is designed to be positioned in the path of the stud 4 carried by the friction washer 3 on gear 2, the slot 26 in the head 25 permitting the brake bar 23 to be moved longitudinally for applying and releasing the brake, the applicationof the brake being` effected by the engagement of the pin 4 with the lug 29 on said head and which occurs only when the tone arm ceases its movement.

The arms 9 and 28 of the plate 5 are spaced apart and the stud 4 carried by the washer 3 engages both the lug 29 and the lip 10 in a manner to be described. A'

A coiled "spring 30 is connected at one end with the lower face of bar 28 and at its other end with the supporting frame of the machine and operates to normally move the bar outward to'hold the brake 2O in inoperative position and. to return it to this position when released and the machine is in operation.

In theuseof this attachment, the parts are mounted as shown, and the brake appliedr and locked by the engagement of pin 4 with lug 29 onV the brake bar which is' accomplished by the stoppage of the tone arm at 'its `extreme inward or center position, whichposition is reached on the completion of a record. Then to ychange a record or to repeat the one which has been played, the reproducer R is lifted and moved outward beyond 'the perimeter of the turntable andthe.-

record mounted thereon, which movement owing to the friction joint between links 16 and 17 permits said tone arm to be so moved without releasing the pin from the lug 29, so that the brake remains applied. After change the record or if the one already on the machine is to be repeated, the repro ducer R is moved inward which movement, owing to the fact that links 1G and 17 are in longitudinal alinement and are so held in the friction joint 19, operates to exert a pulling action on the rod 15 and thereby move plate 5 rearward a sullieient distance to disengage lug 29 from pin 4 whereby the brake is automatically released and when the needle engages a groove in the record, which is rotating the tone arm is guided inward or centerward in the usual manner. The knob 7 mounted on the free end of the plate 5 is designed to start the record without moving the tone arm should the reproducer rest on the record with the brake applied. When this knob is used it is grasped by the operator and the plate is moved reaiwvard to release lug 29 from pin 4, and permits the brake bar to move outwardly under tension of spring 30 and to release the turntable. Five turns of the record will move the tone arm five threads nearer to the center of the record and during this movement the gear 2 will make one revolution. The revolution of the gear 2 correspondingly rotates the friction washer 3 and on each revolution thereof the stud 4 engages the lip 10 of plate 5 which lip is bent at au angle and to pull the plate forward in the position shown in Fig. 1, the impelling force of the tone arm operates to move the plate 5 including the lip 10, rear ward to the position shown in Fig. 2. The pin or stud 4 operates when it engages lip 1() to draw down the plate forward to the limit of the slots 13, thus slipping friction joint 19. It will thus be seen that the tone arm will swing the plate 5 rearwardly while the pin 4 engaging the lip 10 will swing it forwardly. The backward movement produced by the action of the tone arm on the plate 5 causes the pin 4 to escape engage ment with the lug 29 on the brake bar 23 thereby avoiding the application of the brake during the playing of a record, it beingvneeessary to provide this oscillatory movement of plate 5 so that when the tone arm reaches the last line of the record the movement of said arm will stop and consequently it will have no effect on plate 5 so that the lug 29 will be positioned in the path of the stud -l and will be engaged by said stud on the turning of the gear 2 which will cause the brake bar 23 to be moved longitudinally inward thereby applying the brake and stopping the machine. The :friction washer 3 which carries the stud 4 will permit the brake to be applied gently and smoothly and avoid abrupt stoppage of the machine From the above description it `will be obvious that lif the reproducer is removed from the record by the operator either before or aft-er the record is played the turntable `will stop Without any attention from the operator. It is impossible forthe turntableto run at any time except when the tone arm is innr moved centerward. i

i he preferred embodiment ot the invention is disclosed in the drawings "and set forth in the specification, but it will 'be understood that any modifications within the scope of the claimed invention may be made in the construction `without departing from the principle of the invention or sacrificing any of its advantages.

What is claimed is:

`l. In an automatic non-set stop for talking machines, the combination with a -tone arm; of a brake, a spring to hold said brake in inoperative position, means to move said brake `against the tension of its spring to apply the brake., and means controlled by the tone arm to move 4the brake out of hthe path of said brake moving means while the tone arm is in motion.

2. In an automatic non-set stop for talking machines, the combination `with a tone arm; of a brake carrying bar, a spring to hold said bar with the brake normally in -inoperative position, rotary means to engage said bar and move it against the tension of its s ring to apply the brake, and means control ed by the tone arm to move the bar out of the path of said rotary means while the tone arm is in motion.

3. In an automatic non-set stop for talking machines, the Combination With a tone arm; of a brake carrying bar, a spring to hold said bar with the brake normally in inoperative position, rotary means having a stud to engage said bar and move it against the tension of its spring to apply the brake, and means controlled by the tone arm to move the bar out of the path of said stud while the arm is in motion.

4. In a stopof the class described the combination with a tone arm; a turntable, a post connected to rotate said table, a re ciprocating brake carrying bar, a spring to hold said bar with the brake normally in inoperative position, rotary means operable by the turntable operating means to engage said bar and move it against the tension of its spring to apply the brake, and means controlled by the tone arm to move the bar out of the path of said rotary means while the tone arm is in motion.

5. The combination with a tone arm and! a turntable and its operating post; a reciprocating brake carryingr bar, a `spring to hold said bar with the brake normally in inoperative position, a gear fixed to rotate with said post, another gear meshing with said post carried gear, a friction disk carried by Said `second mentioned `gear and having a projection to engage sai-1d 4bar to move it against the `tension of its spring to apply the brake, and means controlled by the tone arm to move the bar out ofthe path of said disk while the arm is in motion.

6. The combination with a tono arm and a turntablegof a reciprocating brake carrying bar, a spring to hold said bar with the brake normally in inoperative position, a plate pi-voted to swing horizontally under said turntable, a connection between said plate and bar `whereby the bar swings with the plate, a connection between said plate and tone arm whereby the plate is swung in one direction by the tone arm, rotary means to engage said plate and move it in a .direction oppositel to that. in which it is moved by said arm whereby said bar is positioned in the path of said vrotary means, the arm moving said bar out of said path while the arm is in motion.

7. The combination with a tone arm and a turntable; of a brake for said turntable, an operating bar connected with said brake, a plate pivoted to swing horizontally under said turntable, a connection between said plate and bar whereby the bar is moved With the plate, a cammember carried by said plate, a. rotary element mounted to engage said cam member and move said pla-te in one direction whereby the brake bar is positioned in the path of said element, and a connection between said plate and tone arm whereby the plate is swung away from said rotary element a snflicient distance to prevent the engagement of the bar by said element while the tone arm is in operation.

8. The combination with a tone arm and a turntable; of a brake for said turntable, a bar connected to operate said brake, a plate mounted to swing horizontally under said turntable, a pin and slot connection between said plate and bar to provide :for the swinging of the bar with the plate and permit the bar to slide longitudinally on the plate, means for limiting the swinging movement of said plate, a rotary element mounted to engage said plate and swing it in one direction to bring the brake bar in the path of said element, and a. connection between said plate and tone arm whereby the brake bar is moved out of the path of said element during the operation of the tone arm.

9. The combination with a tone arm and a turntable; of a brake for said turntable, a bar connected to operate said brake, a plate' mounted to swing horizontally under said turntable, a pin and slot connection between said plate and bar to provide for the swinging of the bar with the plate and permit the bar to slide longitudinally on the plate, means for limiting the swinging movement of said plate, a rotary element mounted to engage Said plate and swing it in one direction to bring the brake bar in the path of said element, a. pitman pivoted at one end to said plate, a bracket carried by said tone arm, and a link connecting the other end of said pitman with said bracket-,the jointbetween the ybracket and thelink being in the form of a friction' joint.y

l0. In anautomationon-set stop for-talking machines, the combination with a tone arm, of a brake, a. spring to hold vsaid brake in inoperativeposition, means to move Vsaid brake against the tension of itsspring to apply the brake, mea-ns controlled by the tone arm Ito move the bar out ofthe path ofsaid! brake moving means while the tone arm is in motion, and means to permit unsteady motion of the arm while playing without afectino the braking mechanism.

.11i-n an automaticnon-set stop for talking machines, the combination with a tone arm; of a brake carrying bar normally held in inoperative position, rotary means hav# ing a stud to engage said bar and move it to apply the brake, a member mounted for oscillatory movement'and having a pin and slot connection with said brake bar whereby said bar is moved out of the pathfoi` said stud by the swinging of said member in one direction, yaprojection carried lby said mem ber in the path of'said stud to. be engaged by the stud oneach revolution of said. rotary means to swing said member toposition the brake bar in the path'of thelstud, and' means operableby the inwardmovement of.' the tone arm' to move said membei` in the oppo site direction and thereby move the brake from the path of the stud before its engage ment thereby.

12. In an automatic non-set stop `tor talking machines, t-he combination with a. tone arm; of a brake carrying bar normally held in inoperative position, rotary means having a stud, a member mounted for oscillatory movement, said brake bar and member having projections mounted for successive engagement by said stud, the engagement of the stud with the projection oi .said member operating to position the projection on the brake'bar` inthe path of the stud, and means operable by the inward movement of the tone arm to move said brake carried projection out of the path of the stud before its engagement thereby.

13. In an automatic non-set stop ior talking machines, the combination with a tone Ln ROY ooPL'N. 

